Gas cooking-stove.



No. 627,710. v Patented lune'"-27, i899. w. scnmnz.

GAS COOKING STOVE.

(Application filed July 26, 1897 (N0 Mbdal.)

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PATENT WI LHELM J OS. SCHMITZ, OF HAMBURG, GERMANY.

GAS COOKING-STOVE.

SPECIFICATION forming part of Letters Patent No. 627,710, dated June 27,1899.

I Application filed July 26, 1897- Serial No. 646,014. (No model.) I

vented a new and useful Gas Cooking-Stove,

of'which the following is a specification, reference being had thereinto the accompanying drawing.

This invention relates to gas cooking-stoves;

and it consists in certain improved constructions and combinations ofparts, forming an economical and efficient cooking device and one inwhich the consumption of gas is limited to the time onlyin whichacooking utensil is on the stove.

The figure of the drawing shows thestove in a vertical section.

The stove consists of a supporting-frame comprising, among its members,the top w and three or more supporting-standards A A A. Supported uponthis frame and secured thereto is a pipe at, which is connected in anypre- The burner is supported upon this pipe and is composed of thevalve-casing O, the mixing-chamber B,

the "tube B connecting these two, and other auxiliary parts. Thevalve-casing O is connected directly to the pipe at, the interiorchamber 0 thereof receiving the gas directly from said pipe. The upperwall of the valvecasing C is provided with an aperture for the passageof the gas from the casing, and this aperture or passage d is controlledby the valve d, which is forced upward to close the aperture or passaged by a spring f. The

casing C also has a side passage t, which is controlled by thevalve-cock 8, located in the extension S, connected with thevalve-casing O by a screw-threaded tap engaging threads in the passagei.

To the upper end of the valve-casing C is secured the tubular casing orchamber B,

and to the top of this is secured the mixingchamber 13. Thismixingchamber is outwardly expanded near its top and is provided at itslower end with the apertures 0 for the admission of air. The top orupper wall of the tubular chamber B is provided with apertures m for thepassage of the gas into the mixing-chamber B. The gas passes throughthese withsuchforce as to draw in airthrough the openings 0, and the twoare mixed as they pass upward in the chamber, the screen 19 serving tocomplete this intermingling of the gas and air, as Well as to preventthe entrance of the flame of the burner into the mixing-chamber, in awell-known way.

To the center of the top of the tubular chamber B is secured a tube H,and to the top of this tube is secured the deflector Q, which forms,withthe top of the mixing-chamber, a narrow annular opening q for thedischarge of thegaseous fuel.

An aperture 'is provided through the deflector Q and the top of thechamber B, and a rod h, provided with a flat head '1", extendsdownwardly through these openings and through the tube H. This rod h inturn rests upon a rod g, which has its lower end resting upon the valved, with its upper end in contact with the rod h. The springK normallyholds the two in such a position that the head 0' of the rod h is abovethe level ofthe grids 25, secured to the top of the frame. The tube H isprovided near its upper end with openings h, so that any gas which mayenter the tube at its lower end when the rod r is depressed will passreadily into the mixing-chamber and to the burner-orifice q.

Itwill thus be seen that when a utensil is placed upon the grids 6 itsbottom will contact with and depress the head 4 and rods h and g,forcing the valve d downward and permitting gas to pass into the casingB and to the burner. It will also be noted that the spring K supportsthe rods h and g, so that a comparatively light spring is required inthe valve-casing, thus reducing wear of the valve and its seat andrendering repairs, when required, much more readily and easily made.

In order to supply'an auxiliary lightingflame for the gaseous materialsissuing from the annular opening, I connect a tube a with the extensionS. This tube extends upward and discharges near the underside ofthe'deflector Q, and in order that the flame of this auxiliary burnershall be supplied with mixed gas and air the lower end of the sameisclosed with a plug 50', through which there is a small passage mfor thegas. The pipe u is provided with apertures 12 '0 near the end of theplu'gac'. The passage of gas through the pipeuis controlled by the cock5. This cock is normally open sufficiently to maintain a small constantlighting-flame at the end of the pipe to. It

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will thus be seen that by maintaining the lighting-flame at 4) wheneverthe valve d is opened by placing a cooking utensil on the stove the gasissuing from the annular opening of the burner will be at onceautomatically ignited.

As the removal of the utensil will permit the spring R to' raise therods h and g,,this will permit the spring f to close the valve and cutofi the supply of gas, leaving the lightingburner alone burning.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. In a gas-stove the combination with the main frame havinga grid tosupport cooking utensils of the burner having the deflector at the top,the supporting-tube therefor, the valve controlling the supply of gas tothe burner, and a rod passing through said deflector and itssupporting-tube and extending upward a short distance above said grid,

said rod being operatively connected with the controlling-valve,substantially as described.

2. In a gas-stove the combination with the main frame having a grid forsupporting cooking utensils, a burner having a deflector at the top, thesupporting-tube for said deflector, the valve controlling the supply ofgas to the burner and a rod having its upper end above the level of saidgrid and extending downward through said deflector and supporting-tubeand operatively connected with said controlling valve, substantially asdescribed.

3. In a gas-stove, the combination with the burner, the utensil-supportand the springsupported valve for controlling the supply of gas to theburner, of the spring-supported rod for operating the valve, extendingabove the utensil-support, substantially as described.

In witness whereof I have hereunto set n y hand in presence of twoWitnesses.

WILHELM J OS. SCHMITZ. Witnesses:

GUSTAV WEBER, ERNST BAUMHOFF.

